#pragma once
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include "Log.hpp"
#include "Common.hpp"
#include "InetAddr.hpp"

namespace SocketModule
{
    using namespace LogModule;
    
    class Socket;

    class Socket
    {
    public:
        virtual ~Socket() = default;
        virtual void SocketOrDie() = 0;
        virtual void SetSocketOpt() = 0;
        virtual bool BindOrDie(int port) =0;
        virtual bool ListenOrDie() = 0;
        virtual int Accepter(InetAddr* client) = 0;
        virtual void Close() = 0;
        virtual int Recv(std::string *out) = 0;
        virtual int Send(const std::string &in) = 0;
        virtual int Fd() = 0;
        //提供一个创建listensockfd的固定讨论
        void BuildTcpSocketMethod(int port)
        {
            SocketOrDie();
            SetSocketOpt();
            BindOrDie(port);
            ListenOrDie();
        }
        //其他方法，需要的时候再加

    };

    class TcpSocket:public Socket
    {
    public:
        TcpSocket() : _sockfd(gdefaultsockfd)
        {}
        TcpSocket(int sockfd) : _sockfd(sockfd)
        {}
        virtual void SocketOrDie() override
        {
            _sockfd = ::socket(AF_INET, SOCK_STREAM, 0);
            if(_sockfd < 0)
            {
                LOG(LogLevel::ERROR) << "socket error";
                exit(SOCKET_ERR);
            }
            LOG(LogLevel::DEBUG) << "socket create success: "<<_sockfd;
        }
        virtual void SetSocketOpt() override
        {
            int opt = 1;
            //保证我的服务器断开之后，可以立即重启，不会有bind问题
            int n = ::setsockopt(_sockfd, SOL_SOCKET, SO_REUSEADDR, &opt,sizeof(opt));
            (void)n;
        }

        virtual bool BindOrDie(int port) override
        {
            if(_sockfd == gdefaultsockfd)
                return false;
            
            InetAddr addr(port);
            int n = ::bind(_sockfd, addr.NetAddr(),addr.NetAddrLen());
            if(n < 0)
            {
                LOG(LogLevel::ERROR) << "bind error";
                exit(BIND_ERR);
            }
            LOG(LogLevel::DEBUG) << "bind create success: "<<_sockfd;
            return true;
        }

        virtual bool ListenOrDie() override
        {
            if(_sockfd == gdefaultsockfd)
                return false;
            int n = ::listen(_sockfd, gbacklog);
            if(n < 0)
            {
                LOG(LogLevel::ERROR) << "listen error";
                exit(LISTEN_ERR);
            }
            LOG(LogLevel::DEBUG) << "listen create success" << _sockfd;
            return true;
        }

        //1，文件描述符  2，client info
        int Accepter(InetAddr *client) override
        {
            struct sockaddr_in peer;
            socklen_t len = sizeof(peer);
            int newsockfd = ::accept(_sockfd, CONV(&peer), &len);
            if(newsockfd < 0)
            {
                LOG(LogLevel::ERROR) << "accept error" ;
                exit(ACCEPT_ERR);
            }
            LOG(LogLevel::DEBUG) << "accept create success, newsockfd: " << newsockfd;
            return newsockfd;
        }

        virtual void Close()
        {
            if(_sockfd == gdefaultsockfd)
                return;
            
            ::close(_sockfd);
        }

        virtual int Recv(std::string *out) override
        {
            char buffer[1024 * 8];
            auto size = ::recv(_sockfd, buffer, sizeof(buffer)-1, 0);
            if(size > 0)
            {
                buffer[size] = 0;
                *out = buffer;
            }

            return size;
        }


        virtual int Send(const std::string &in) override
        {
            auto size = ::send(_sockfd, in.c_str(), in.size(), 0);
            return size;
        }

        virtual int Fd() override
        {
            return _sockfd;
        }

        ~TcpSocket()
        {
            
        }
    private:
        int _sockfd;
    };

}